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The transfer function of a stable discrete-time LTI system is H(z)=K(z-α)/(z+0.5), where K and α are real numbers. The value of α (rounded off to one decimal place) with |α|>1 for which the magnitude response of the system is constant over all frequencies, is
Correct : -2
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A realization of a stable discrete time system is shown in the figure. If the system is excited by a unit step sequence input x[n], the response y[n] is
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